Print: PageSetup with 2018r1

PageSetup when displayed seems to “disconnect” the keyboard (not able to change the scaling %, press Return is ignored.
Thus, not always the case, it is often, very often. Looks like a slowdown.More tests have to be done.

Also, the Finder seems to not respond to the Mouse (orders: selection for example).

Is it only here or… ?

PS: This is a special project; I created it with and use 2018r1 to develop it as a matter to really know (touch with my own hands) what 2018r1 really is (differences with 2015r1 that I have license for and use on an everyday basis).